Rear bumper for an automobile



FIG. 1 is a front elevation view of a rear bumper for an automobile,showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevation view thereof; and,

FIG. 4 is a perspective view thereof.

The broken lines are for illustrative purposes only and form no part ofthe claimed design.

The ornamental design for, a rear bumper for an automobile, as shown anddescribed.